A printing system including printing equipment in which, even if the equipment are interconnected through an interface pursuant to the IEEE 1394 standard, the printing image may be set to effect printing. There is provided a CPU 23 for generating the printing control information containing the text printing image information indicating the picture processing contents for the text at the time of printing and the picture printing image information indicating the processing contents for a picture at the time of printing. There is also provided a data conversion unit 13 which manages control so that picture data and the printing control information will be contained in a packet consistent with the IEEE 1394 standard and sent as output to a printer device 5, and so that the picture data contained in the packet sent as output to the printer device 5 will be printed in accordance with the printing control information. When packets are transmitted/received between the equipment interconnected through the IEEE 1394 interface to print the picture data, the picture processing consistent with the text printing image information and the picture printing image information is performed on the picture data on the side printer device 5 to print the text or the picture.